Looking for help with the repair of my Bosch 1613 EVS router which I recently knocked off a saw horse. When it hit the floor it shattered the fine adjustment knob. The plunge lock does not lock properly and the plunge mechanism works poorly at best. One post is 2 mm higher than the other side. Not quite sure how to get this unit apart to see what is wrong with the plunge mechanism. Would like to effect the repairs without taking it to the local Bosch repair shop at Hartville Hardware. Any ideas? TIA.

Dave Schemansky